This is Electronic Sensor Detector Welcome Chime Speak. You can put it to any places of your room. This product is excellent for being used at home office shop or any places need to welcome the guests or the customers. Built-in anti-interference system avoid false ringing and miscommunication among different users.

Features:1.Light control2.Infrared induction3.Sounds language:in Chinese(Hello,welcome and Dingdong)4.Bites rat-a-tat you to welcome the presence well5.Fitted with three 1.5V batteries on the 7th, the guests hung on the door edge device will switch out to like the voice file access when there are guests, the guests before the issue to automatically select the voice6.Light control range of 3 - 7 meters, it is recommended that adequate use of light, Infrared control range of 8 meters, when the voice weak, please replace the battery in time